211213412121 has 8 divisors (see below), whose sum is σ = 281621108160. Its totient is φ = 140807328752.

The previous prime is 211213412083. The next prime is 211213412141. The reversal of 211213412121 is 121214312112.

211213412121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211213412121 - 2¹⁷ = 211213281049 is a prime.

It is a super-2 number, since 2×211213412121² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211213412141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54486 + ... + 652223.

It is an arithmetic number, because the mean of its divisors is an integer number (35202638520).

Almost surely, 2^211213412121 is an apocalyptic number.

It is an amenable number.

211213412121 is a deficient number, since it is larger than the sum of its proper divisors (70407696039).

211213412121 is an equidigital number, since it uses as much as digits as its factorization.

211213412121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806335.

The product of its digits is 192, while the sum is 21.

Adding to 211213412121 its reverse (121214312112), we get a palindrome (332427724233).

The spelling of 211213412121 in words is "two hundred eleven billion, two hundred thirteen million, four hundred twelve thousand, one hundred twenty-one".